Herein, a simple-green road for preparing carbon dots (CDs) from the mixture of PEG6000 and papain with approving fluorescence has been successfully developed for the first time. Meanwhile, the current CDs were characterized by analytical means such as fluorescence, UV visible spectrophotometer, HR-TEM, XPS and FTIR and so on. Afterwards, this kind of CDs were employed for analyzing doxycycline (DC) relying on the mechanism that the functional group of DC had interactions with CDs, hence, leading to the fluorescence quenching. Also, this DC analytical method mentioned here permitted in a linear range of $5.0 \times 1 0^{- 8}$ $5.0 \times 1 0^{- 8}$ mol/L- $5.0 \times 1 0^{- 4}$ $5.0 \times 1 0^{- 4}$ mol/L as well as a detection limit of 18nM at a signal-to-noise ratio (S/N) of 3. More importantly, the CDs prepared here were still explored for milk real samples, indicating their potential for broadening avenues towards other various applications.

Keywords:

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Vol. 13, No. 09

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History

Received 5 May 2018

Accepted 14 August 2018

Published: 11 September 2018

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Synthesis of Carbon Dots from PEG6000 and Papain for Fluorescent and Doxycycline Sensing

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Synthesis of Carbon Dots from PEG6000 and Papain for Fluorescent and Doxycycline Sensing

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